Abstract
The present study aims mainly at investigating the site effect at the new Luxor city, Egypt, using microtremor measurements. Accordingly, 41 ambient noise recordings were implemented covering the investigated area in a reasonable manner with spacing nearly 1 km between each measurement station. The data were analyzed using Nakamura’s technique. The results show that; the investigated area exhibits low fundamental frequency values ranging between 0.28 - 0.47 Hz and its corresponding amplification factor values vary between 2.3 and 6.8. Consequently, the studied site is characterized by the presence of thick soft sediments overlying a hard bed rock. The seismic vulnerability index (Kg) was estimated, relying on the estimated fundamental frequency (F0) and amplification factor (A0), through the range between 11 and 95 across the mapped area. The obtained Kg values were noticed to be compatible with amplification level results. The central part of the investigated area reflects the higher Kg and A0 values.
Highlights
The fast growing in the population density, especially its concentration around the river Nile banks, induced the Egyptian government to construct many new cities and urban communities in the new desert areas all over the country
The present study aims mainly at investigating the site effect at the new Luxor city, Egypt, using microtremor measurements
The results show that; the investigated area exhibits low fundamental frequency values ranging between 0.28 - 0.47 Hz and its corresponding amplification factor values vary between 2.3 and 6.8
Summary
The fast growing in the population density, especially its concentration around the river Nile banks, induced the Egyptian government to construct many new cities and urban communities in the new desert areas all over the country. The most important factor to mitigate the earthquake hazard is the land use planning of urban areas which are located on or near the active seismic zone such as the proposed site of the new Luxor city. Many researchers implemented Nakamura method to determine the site effect in different parts of Egypt (e.g., Abdel-Rahman et al, 2012; El-Eraki et al, 2012; Abudeif et al, 2019; Fat-Helbary et al, 2019; Mohamed et al, 2013, 2015, 2020; Meneisy et al, 2020) This method was used in the current study to investigate the potentiality of amplification level of soft sediments and assess the impact of soil conditions at the studied area
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